Wayne BradyBOOED for Trig Palin Joke at Roseanne Roast

8/13/2012 5:45 AM PDT

Wayne Brady -- BOOED for Trig Palin Joke at Roseanne Roast

File this under "Things You Didn't Expect to Hear Today" -- Wayne Brady is under fire for a RACY joke he made at the "Comedy Central Roast of Roseanne" .... WAYNE BRADY!!!

So what subject was so touchy that the crowd actually booed?? Brady made a joke featuring Sarah Palin's son Trig ... who suffers from Down Syndrome.

Now for the joke ... which Brady made while addressing Jeff Ross:

"Now the thing is Jeff ... these are all jokes, and I really like you. I really, really like you. But a lot of people hate you, especially Sarah Palin because you remind her of what Trig is going to look like when he’s 40."

After some boos, Brady shot back, "Oh, now you boo me? F*ck y’all. I don’t want to hear that. These people say all of this sh*t about me, and you boo me because of Trig?”